XML 21 R40.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Organization and Significant Accounting Policies - Narrative (Details)
12 Months Ended
Dec. 31, 2019
segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Number of operating segments 1
Number of reportable segments 1
Sales commissions amortization period 3 years